1 After his _______, Mr. Hammond returned to this home village to do the gardening. (retire) 2 They are walking along a _______ path. (rock) 3 We must stop the __________ of our beaches. (pollute) 4 The teacher stressed the need for relugar _________. (attend) 5 She is selling a lot of clothes at a huge __________. (reduce) 6 Some of the passengers on the coach were ____________ injured in the accident. (serious) 7 __________ is better than cure. (prevent) 8 Pasteur was a famous scientist whose _____________ of a cure for rabies has helped many people all over the world. ( discover ) 9 " To ______________" means to remove trees or forests from a place. ( forest ) 10 Drinking too much whisky is _______________ to your health. ( harm ) 12 All _____________ to New York today are delayed because of bad weather. ( fly ) 13 It took a lot of ______________ to convince the committee of the advantages of the new scheme. (persuade ) 14 Sulfur dioxide is one of several _________________ that are released into the atmosphere by coal-fired power station. ( pollute ) 15 If the drought continues, deaths will occur on a _______________ scale. ( mass )